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Water Resources Data System
Dept 3943
1000 E. University Ave.
Laramie, WY 82071

wrds@uwyo.edu
Ph (307) 766-6651
Fax (307) 766-3785


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United States           Natural Resources             Water and Climate Center
Department of           Conservation                          Portland, Oregon
Agriculture             Service

          S N O W  -  P R E C I P I T A T I O N    U P D A T E

              Based on Mountain Data from NRCS SNOTEL Sites
                    As of SATURDAY: MAY 15 , 2010
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030     1.2     7.0    17     16.0    25.5    63
 COTTONWOOD CREEK         7670    15.4    14.4   107     27.7    33.7    82
 GRAND TARGHEE            9260    46.0      -M      *    35.1      -M      *
 GRANITE CREEK            6770     1.3     8.2    16     15.0    23.5    64
 GRASSY LAKE              7265    18.2    27.1    67     30.9    42.7    72
 GROS VENTRE SUMMIT       8750     8.8    10.2    86     12.0    16.3    74
 GUNSIGHT PASS            9820    11.8      -M      *    15.0      -M      *
 LEWIS LAKE DIVIDE        7850    18.2    29.5    62     26.1    43.3    60
 PHILLIPS BENCH           8200    17.4    24.6    71     24.9    34.7    72
 SALT RIVER SUMMIT        7760     6.3     5.3   119     15.8    22.7    70
 SNAKE RIVER STATION      6920      .0     6.2     0     19.3    26.8    72
 SPRING CREEK DIVIDE      9000    23.1    25.1    92     23.6    31.5    75
 THUMB DIVIDE             7980     5.3    10.1    52     16.6    23.3    71
 TOGWOTEE PASS            9580    23.7    27.5    86       -M    30.7      *
 TWO OCEAN PLATEAU        9240    26.4    30.8    86     22.2    34.0    65
 WILLOW CREEK             8380    22.3    25.8    86     34.9    40.0    87
                                                -----                  -----
                Basin wide percent of average     75                     72


UPPER YELLOWSTONE-MADISON

 BEARTOOTH LAKE           9360    17.7    25.6    69     17.8    25.1    71
 BLACK BEAR               8170    27.6    37.0    75     31.7    47.9    66
 CANYON                   7870     7.0     7.4    95     14.1    18.9    75
 FISHER CREEK             9100    26.6    36.8    72     29.6    44.0    67
 MADISON PLATEAU          7750    16.2    20.1    81     25.1    32.0    78
 NORTHEAST ENTRANCE       7350      .0     3.8     0     11.5    15.9    72
 PARKER PEAK              9400    22.2    24.1    92     16.7    21.1    79
 SYLVAN LAKE              8420    13.8    20.8    66     22.1    26.5    83
 THUMB DIVIDE             7980     5.3    10.1    52     16.6    23.3    71
 TWO OCEAN PLATEAU        9240    26.4    30.8    86     22.2    34.0    65
 WHISKEY CREEK            6800     8.4    10.3    82     16.3    25.5    64
 WHITE MILL               8700    19.1    24.9    77     20.4    33.0    62
 WOLVERINE                7650      .1     3.5     3      9.5    16.6    57
                                                -----                  -----
                Basin wide percent of average     75                     70


WIND RIVER

 BURROUGHS CREEK          8750    11.4    10.6   108       -M    20.8      *
 COLD SPRINGS             9630     9.2     3.5   263     17.7    15.4   115
 DEER PARK                9700    22.5    17.3   130     27.4    28.7    95
 HOBBS PARK              10100    25.7    16.9   152     26.4    18.8   140
 LITTLE WARM              9370    10.6     8.0   133     14.4    18.3    79
 SOUTH PASS               9040    19.4    14.4   135     25.5    24.4   105
 ST. LAWRENCE ALT         8620     9.8     4.0   245     19.1    13.6   140
 TOGWOTEE PASS            9580    23.7    27.5    86       -M    30.7      *
 TOWNSEND CREEK           8700    16.2     5.9   275     24.0    17.1   140
                                                -----                  -----
                Basin wide percent of average    137                    113


BIGHORN BASIN

 BALD MTN.                9380    18.8    23.2    81     15.9    23.3    68
 BEAR TRAP MEADOW         8200     5.1      .9   567     12.4    12.4   100
 BLACKWATER               9780    22.7    28.9    79     21.6    26.5    82
 BONE SPRINGS DIV         9350    15.3    16.5    93     15.3    20.1    76
 EVENING STAR             9200    21.5    32.6    66     26.2    31.8    82
 GRAVE SPRINGS            8550    12.0     8.4   143     16.7    14.6   114
 KIRWIN                   9550    13.3    11.3   118     15.6    15.7    99
 MARQUETTE                8760    14.0     9.1   154     16.9    15.6   108
 MIDDLE POWDER            7760    13.8    11.5   120     13.1    17.4    75
 OWL CREEK                8975     3.4     2.5   136     11.2     9.4   119
 POWDER RIVER PASS        9480     8.9     8.4   106     15.2    17.5    87
 SHELL CREEK              9580    16.3    16.5    99     16.1    18.5    87
 SYLVAN LAKE              8420    13.8    20.8    66     22.1    26.5    83
 SYLVAN ROAD              7120      .0     3.1     0     15.8    21.8    72
 TIMBER CREEK             7950     5.5     2.3   239     13.3    12.3   108
 YOUNTS PEAK              8350    12.8    15.8    81     13.3    20.2    66
                                                -----                  -----
                Basin wide percent of average     93                     86


SHOSHONE RIVER

 BLACKWATER               9780    22.7    28.9    79     21.6    26.5    82
 EVENING STAR             9200    21.5    32.6    66     26.2    31.8    82
 KIRWIN                   9550    13.3    11.3   118     15.6    15.7    99
 MARQUETTE                8760    14.0     9.1   154     16.9    15.6   108
 SYLVAN LAKE              8420    13.8    20.8    66     22.1    26.5    83
 SYLVAN ROAD              7120      .0     3.1     0     15.8    21.8    72
 YOUNTS PEAK              8350    12.8    15.8    81     13.3    20.2    66
                                                -----                  -----
                Basin wide percent of average     81                     83


POWDER-TONGUE

 BEAR TRAP MEADOW         8200     5.1      .9   567     12.4    12.4   100
 BIG GOOSE                7990    13.3     9.3   143     18.0    14.7   122
 BONE SPRINGS DIV         9350    15.3    16.5    93     15.3    20.1    76
 BURGESS JUNCTION         7880    14.6    10.5   139     16.5    16.9    98
 CLOUD PEAK RESERVOIR     9860    19.4    15.0   129     19.5    19.2   102
 DOME LAKE                8880    13.9    10.7   130     19.1    18.6   103
 GRAVE SPRINGS            8550    12.0     8.4   143     16.7    14.6   114
 HANSEN SAWMILL           8360     5.9     2.4   246     14.0    12.3   114
 MIDDLE POWDER            7760    13.8    11.5   120     13.1    17.4    75
 POWDER RIVER PASS        9480     8.9     8.4   106     15.2    17.5    87
 SUCKER CREEK             8880    17.9    10.5   170     21.5    19.4   111
 TIE CREEK                6870      -M     1.5      *    18.5    15.3   121
                                                -----                  -----
                Basin wide percent of average    135                    101


BELLE FOURCHE

 BLIND PARK               6890     2.5      .2  1250*    17.8    15.8   113
 COLE CANYON              5910     4.0      .9   444     16.9    11.1   152
 NORTH RAPID CREEK        6130      .7      .7   100*    16.8    12.6   133
                                                -----                  -----
                Basin wide percent of average    400*                   130


UPPER N. PLATTE RIVER

 COLUMBINE                9160    18.1    13.8   131     29.2    30.6    95
 DIVIDE PEAK              8880    20.5    13.3   154     29.6    25.8   115
 ELK RIVER                8700    14.0     8.1   173     25.7    24.4   105
 JOE WRIGHT              10120    25.2    24.0   105     29.9    32.3    93
 NORTH FRENCH CREEK      10130    43.2    33.4   129     43.3    31.9   136
 OLD BATTLE              10000    42.6    35.8   119     45.3    42.0   108
 SAGE CREEK BASIN         7850     3.1     7.7    40     16.1    15.0   107
 SOUTH BRUSH CREEK        8440    11.6     6.9   168     25.0    21.8   115
 TOWER                   10500    42.9    51.7    83     42.5    47.6    89
 WEBBER SPRINGS           9250    24.2    18.8   129     35.3    32.9   107
 WILLOW CREEK PASS        9540    13.8    11.6   119     17.3    17.0   102
                                                -----                  -----
                Basin wide percent of average    115                    106


LOWER N. PLATTE - SWEETWATER - LARAMIE

 BROOKLYN LAKE           10240    25.9    23.7   109     29.5    29.0   102
 CASPER MTN.              7900    16.8    12.2   138     20.1    21.6    93
 DEADMAN HILL            10220      -M    18.3      *      -M    22.7      *
 DEER PARK                9700    22.5    17.3   130     27.4    28.7    95
 LAPRELE CREEK            8375     6.4     3.8   168     18.2    18.1   101
 RENO HILL                8400    17.4    10.1   172     24.8    22.4   111
 ROACH                    9700    22.5    13.9   162     28.6    24.3   118
 SAND LAKE               10050    39.9    35.8   111     39.7    31.7   125
 SOUTH PASS               9040    19.4    14.4   135     25.5    24.4   105
 WINDY PEAK               7900     7.4     1.9   389     17.4    15.1   115
                                                -----                  -----
                Basin wide percent of average    134                    107


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440      .0      .9     0*    19.0    19.7    96
 DIVIDE PEAK              8880    20.5    13.3   154     29.6    25.8   115
 OLD BATTLE              10000    42.6    35.8   119     45.3    42.0   108
 SANDSTONE RS             8150     5.2     4.1   127     22.0    23.3    94
 WHISKEY PARK             8950    28.2    27.0   104     39.0    35.9   109
                                                -----                  -----
                Basin wide percent of average    119                    106


UPPER GREEN RIVER

 BIG SANDY OPENING        9080     6.9     9.4    73     12.5    17.1    73
 BLIND BULL SUM           8650    20.7    25.2    82     16.8    26.5    63
 EAST RIM DIVIDE          7930      .2     9.6     2      9.2    14.8    62
 ELKHART PARK G.S.        9400     8.1     9.7    84     11.6    17.3    67
 GROS VENTRE SUMMIT       8750     8.8    10.2    86     12.0    16.3    74
 GUNSIGHT PASS            9820    11.8      -M      *    15.0      -M      *
 KENDALL R.S.             7740      .1     4.2     2     10.9    17.4    63
 LOOMIS PARK              8240     3.8    10.1    38     13.2    21.1    63
 NEW FORK LAKE            8340      .5     4.2    12      8.7    14.5    60
 POCKET CREEK             9360     8.8      -M      *    14.4      -M      *
 SNIDER BASIN             8060     7.8     8.1    96     15.8    19.4    81
 SPRING CREEK DIVIDE      9000    23.1    25.1    92     23.6    31.5    75
 TRIPLE PEAK              8500    18.0    17.7   102     27.2    30.2    90
                                                -----                  -----
                Basin wide percent of average     73                     71


LOWER GREEN RIVER

 HAMS FORK                7840      .6     1.5    40     13.8    15.8    87
 HEWINTA                  9519     9.1     4.8   190     17.7    19.0    93
 HICKERSON PARK           9145     2.7     2.3   117     15.3    11.3   135
 HOLE-IN-ROCK             9150     2.3     1.9   121     15.0    10.8   139
 INDIAN CREEK             9425    21.7    24.2    90     22.3    30.9    72
 KELLEY R.S.              8180     9.0     9.5    95     17.5    24.8    71
 STEEL CREEK PARK        10200    21.1    18.3   115     22.0    21.5   102
                                                -----                  -----
                Basin wide percent of average    106                     92


UPPER BEAR RIVER

 BUG LAKE                 7950    11.7    11.4   103     19.2    23.7    81
 HAYDEN FORK              9212     7.4     7.8    95     24.0    26.7    90
 KELLEY R.S.              8180     9.0     9.5    95     17.5    24.8    71
 LILY LAKE                9156    11.7     6.7   175     20.1    22.5    89
 MONTE CRISTO             8960    18.3    23.2    79     24.6    32.1    77
 SALT RIVER SUMMIT        7760     6.3     5.3   119     15.8    22.7    70
 TRIAL LAKE               9992    20.7    23.6    88     21.4    31.2    69
                                                -----                  -----
                Basin wide percent of average     97                     78

-----------------------------------------------------------------------------


 -M   = Missing data
  *   = Data may not provide a valid measure of conditions.
Units = inches for the Current and Average Snow Water Equivalent and

Total Precipitation values

If the Basin wide percent of average value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.

The SNOW WATER EQUIVALENT Percent of Average represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the average value for those sites on this day.

The TOTAL PRECIPITATION Percent of Average represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the average value for those sites on this day.

Contact your state water supply staff for assistance.

Reference period for average conditions is 1971-2000.

Provisional data, subject to revision.